Collars Multiplex are ideal for connecting bituminous membranes with through pipes. They have a smooth flange to ensure an excellent join with the membranes and a perforated flange to improve adhesion with bituminous sheaths. The pyramid shape covers diameters from 10 to 80 mm (CM10) and 90 to 200 mm (CM90). Resistant to sun damage, ozone and atmospheric agents, they offer flexibility even at low temperatures. Compatible with APP and SBS type bituminous membranes. Collars Multiplex are used to connect bituminous membranes with any through pipes. They are equipped with a large, smooth flange for optimal bonding with bituminous membranes and a large, perforated flange for better adhesion with bituminous sheaths. The special pyramid shape of the new Multiplexes allows them to cover diameters from 10 to 80 mm for the CM10 and from 90 to 200 mm for the CM90, with only 2 items.